Features:- In nature, a King Tide requires the perfect alignment of Earth and moon to create once-in-a-lifetime views and opportunities for watermen. Like their namesake, the King Tide 6 is designed to give you the ultimate advantage on the water.- Premium Polarized 580 Lenses. Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses.- 100% UV Protection. Your Costas absorb 100% of UV light, providing you the best in light management and protection.- Scratch Resistant and Durable The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning.- Costa 580 lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short.- The lens' multipatented technologymanages light by:- Absorbing Harmful High-Energy Blue Light (HEV).- Enhancing Reds, Greens, and Blues.- Filtering Out Harsh Yellow.- Copper Silver Mirror.- Well-suited for stream fishing and other environments with varying light.- Copper Base.- 12% light transmission.